AN APPARATUS OF PURIFYING BIOGAS

摘要

The present invention relates to an apparatus for separating gas, which comprises: (d1) a compressor for compressing mixed gas; (d2) a first gas separation unit for separating the compressed mixed gas into first concentrated gas and first permeated gas; and (d3) a carbon dioxide purification unit for removing or reducing carbon dioxide from the first concentrated gas. The apparatus without change with respect to the existing equipment for biogas purification or with the minimized change therethrough, has effects in increasing a collection rate of methane and reducing methane emissions.